// Copyright 2017 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef BASE_TEST_MOVE_ONLY_INT_H_ #define BASE_TEST_MOVE_ONLY_INT_H_ namespace base { // A move-only class that holds an integer. This is designed for testing // containers. See also CopyOnlyInt. class MoveOnlyInt { public: explicit MoveOnlyInt(int data = 1) : data_(data) {} MoveOnlyInt(MoveOnlyInt&& other) : data_(other.data_) { other.data_ = 0; } MoveOnlyInt(const MoveOnlyInt&) = delete; MoveOnlyInt& operator=(const MoveOnlyInt&) = delete; ~MoveOnlyInt() { data_ = 0; } MoveOnlyInt& operator=(MoveOnlyInt&& other) { data_ = other.data_; other.data_ = 0; return *this; } friend bool operator==(const MoveOnlyInt& lhs, const MoveOnlyInt& rhs) { return lhs.data_ == rhs.data_; } friend bool operator!=(const MoveOnlyInt& lhs, const MoveOnlyInt& rhs) { return !operator==(lhs, rhs); } friend bool operator<(const MoveOnlyInt& lhs, int rhs) { return lhs.data_ < rhs; } friend bool operator<(int lhs, const MoveOnlyInt& rhs) { return lhs < rhs.data_; } friend bool operator<(const MoveOnlyInt& lhs, const MoveOnlyInt& rhs) { return lhs.data_ < rhs.data_; } friend bool operator>(const MoveOnlyInt& lhs, const MoveOnlyInt& rhs) { return rhs < lhs; } friend bool operator<=(const MoveOnlyInt& lhs, const MoveOnlyInt& rhs) { return !(rhs < lhs); } friend bool operator>=(const MoveOnlyInt& lhs, const MoveOnlyInt& rhs) { return !(lhs < rhs); } int data() const { return data_; } private: volatile int data_; }; } // namespace base #endif // BASE_TEST_MOVE_ONLY_INT_H_